Wall hook



FIG. 1 is a perspective view of a wall hook showing my new design;

FIG. 2 is a side edge view thereof, it being understood that all side, top and bottom edge views look the same;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof; and,

FIG. 5 is a sectional view on line 5—5 of FIG. 1.

The broken line portions shown in FIGS. 2 are for illustration only, and form no part of the claimed design. 

The ornamental design for a wall hook, as shown and described. 